Complicated weak interactions in a hybrid material containing tetra(isothiocyanate)cobalt(II) and 1,1 '-ethylene-2,2 '-dipyridinium: synthesis, crystal structure, and magnetic properties

摘要

A new inorganic.organic hybrid material, [EtdiPy][Co(NCS)(4)] (1) ([EtdiPy](2+)=1,1 '-ethylene-2,2 '-dipyridinium), was synthesized and characterized by elemental analysis, IR spectrum,UV-Vis spectrum, ESI-MS, and single-crystal X-ray diffraction. Compound 1 is monoclinic, space group P2(1)/n, with a=21.691(5)angstrom, b=8.639(2)angstrom, c=21.748(5)angstrom, beta=90.124(3)degrees, V=4075.1(16)angstrom(3), D-c=1.550g cm(-3), Z=8, F(000)=1928, and R-1=0.0435. The C-H center dot center dot center dot S hydrogen bond, short S center dot center dot center dot C, S center dot center dot center dot N interactions, p center dot center dot center dot pi, and pi center dot center dot center dot pi interactions observed in the solid state of 1 give a 3-D structure. Magnetic measurements from 2 to 300K have shown weak antiferromagnetic exchange with theta=-0.892K in 1.

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